https://devzone.nordicsemi.com/f/nordic-q-a/4668/s130-device-manager-peripheral-and-centralHi, I developed application whitch is using S130 soft device. On central side to manage devices, i&#39;ve used device manager from sdk 6.1.0. It works fine. But now i need to make secure connection on peripheral with only one mobile phone whitch woulden-USTelligent Community 13Thu, 11 Dec 2014 14:49:06 GMThttps://devzone.nordicsemi.com/thread/16562?ContentTypeID=1Thu, 11 Dec 2014 14:49:06 GMT137ad170-7792-4731-bb38-c0d22fbe4515:add3368f-1a83-4f81-8642-1afcce09c242Petter Myhre<p>I guess it is something wrong with <code>&amp;CENTRAL_Data.sec_param</code>.</p> <p>Please try <a href="https://devzone.nordicsemi.com/cfs-file/__key/communityserver-discussions-components-files/4/S130_5F00_peripheral_5F00_pairing.rar">this</a> project. I made it for S130 0.9.0-1 alpha.</p> <p>I used SDK 7.1.0 (with the newest S130 headers) and PCA10001.</p> <p>Extract it to C:\Keil_v5\ARM\Device\SDK7.1.0\examples\ble_central_and_peripheral\experimental.</p> <p><code>sd_ble_gap_sec_params_reply()</code> doesn&#39;t return an error.</p><div style="clear:both;"></div>